<template>
  <div>
    <el-form :inline="true" :model="cForm" :disabled="!isShowList">
      <el-form-item label="一级分类">
        <!-- select v-model收集的是选中的option的value值 -->
        <el-select v-model="cForm.category1Id" placeholder="请选择" @change="handlerCategory1">
          <el-option :label="c1.name" :value="c1.id" v-for="(c1,index) in category1List" :key="c1.id"></el-option>
        </el-select>
      </el-form-item>

      <el-form-item label="二级分类">
        <!-- select v-model收集的是选中的option的value值 -->
        <el-select v-model="cForm.category2Id" placeholder="请选择" @change="handlerCategory2">
          <el-option :label="c2.name" :value="c2.id" v-for="(c2,index) in category2List" :key="c2.id"></el-option>
        </el-select>
      </el-form-item>

      <el-form-item label="三级分类">
        <!-- select v-model收集的是选中的option的value值 -->
        <el-select v-model="cForm.category3Id" placeholder="请选择" @change="handlerCategory3">
          <el-option :label="c3.name" :value="c3.id" v-for="(c3,index) in category3List" :key="c3.id"></el-option>
        </el-select>
      </el-form-item>
      
    </el-form>
  </div>
</template>

<script>
export default {
  name: "CategorySelector",
  props:['isShowList'],
  data(){
    return {
      cForm:{
        category1Id:'',
        category2Id:'',
        category3Id:''
      },
      category1List:[],
      category2List:[],
      category3List:[]
    }
  },
  mounted(){
    this.getCategory1List()
  },
  methods:{
    async getCategory1List(){
      try {
        const result = await this.$API.category.getCategory1()
        if(result.code === 200 || result.code === 20000){
          this.category1List = result.data
        }
      } catch (error) {
        this.$message.error('获取1级分类失败'+error.message)
      }
    },
    //选中1级的时候回调,请求获取二级分类
    async handlerCategory1(category1Id){
      // 重新选择1级，先清空23级对应的数据
      this.cForm.category2Id = ''
      this.cForm.category3Id = ''
      this.category2List = []
      this.category3List = []

      this.$emit('changeCategory',{categoryId:category1Id,level:1})

      try {
        const result = await this.$API.category.getCategory2(category1Id)
        if(result.code === 200 || result.code === 20000){
          this.category2List = result.data
        }
      } catch (error) {
        this.$message.error('获取2级分类失败'+error.message)
      }
    },
    //选中2级的时候回调,请求获取二三级分类
    async handlerCategory2(category2Id){
      // 重新选择2级，先清空3级对应的数据
      this.cForm.category3Id = ''
      this.category3List = []

      this.$emit('changeCategory',{categoryId:category2Id,level:2})

      try {
        const result = await this.$API.category.getCategory3(category2Id)
        if(result.code === 200 || result.code === 20000){
          this.category3List = result.data
        }
      } catch (error) {
        this.$message.error('获取3级分类失败'+error.message)
      }
    },

    //选中3级的时候回调
    handlerCategory3(category3Id){
      this.$emit('changeCategory',{categoryId:category3Id,level:3})
    }


  }
};
</script>

